Cool air duct for refrigerator



FIG. 1 is a perspective view of a cool air duct for refrigerator showing our new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left-side elevation view thereof;

FIG. 5 is a right-side elevation view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a rear perspective view thereof; and,

FIG. 9 is a partial enlarged view thereof in a state of use.

The broken lines in the drawing figures are included for the purpose of illustrating environment and form no part of the claimed design. 

CLAIM We claim the ornamental design for a cool air duct for refrigerator, as shown and described. 